java/AtbashJFRDump/src/main/java/be/atbash/testing/InstantWriter.java
/*
 * Copyright 2022-2023 Rudy De Busscher (https://www.atbash.be)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package be.atbash.testing;

import be.atbash.json.writer.JSONWriter;

import java.io.IOException;
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;

public class InstantWriter implements JSONWriter<Instant> {

    private final DateTimeFormatter formatter = DateTimeFormatter.ofPattern("HH:mm:ss");

    @Override
    public <E extends Instant> void writeJSONString(E value, Appendable out) throws IOException {

        String instantFormatted = formatter.format(LocalDateTime.ofInstant(value, ZoneId.systemDefault()));
        out.append("\"")
                .append(instantFormatted)
                .append("\"");
    }
}
